<template>
  <div>
    <div class="search">
      <el-input v-model="keyword" placeholder="请输入搜索地址信息" clearable>
        <el-button slot="append" icon="el-icon-search" @click="searchAddress" />
      </el-input>
    </div>

    <div id="mapContainer" style="width: 100%; height: 350px" />

    <div class="address">
      <span>当前选点：</span>
      <b>{{
        nowAddress ? (nowAddress.addressComponents.district + nowAddress.addressComponents.streetNumber) : '尚未选点'
      }}</b>
      <el-button v-if="nowAddress" type="text" @click="selectAddress(nowAddress, 1)">【确认选择】</el-button>
    </div>

    <el-table
      highlight-current-row
      :data="nearPointList"
      height="300"
      style="width: 100%"
      class="table"
    >
      <el-table-column prop="address" label="附近推荐地点">
        <template slot-scope="scope">
          {{ scope.row.address }}{{ scope.row.name }}
        </template>
      </el-table-column>
      <el-table-column label="操作" width="100" align="center">
        <template slot-scope="scope">
          <el-button type="text" @click.native.prevent="selectAddress(scope.row, 2)">确认选择</el-button>
        </template>
      </el-table-column>
    </el-table>

  </div>
</template>
<script>
import txMapUtil from '@/utils/tx-map-util'

export default {
  data() {
    return {
      keyword: '', // 搜索关键词
      nearPointList: [], // 附近地址
      isShowDialog: false, // 是否显示弹窗
      markersArray: [],
      geocoder: null,
      nowAddress: null, // 选择的地点
      geocoderLocation: null
    }
  },
  mounted() {
    setTimeout(() => {
      this.keyword = ''
      this.initMap()
      this.setLocationByLatLng(txMapUtil.centerLat, txMapUtil.centerLng)
    })
  },
  methods: {
    // 搜索地址
    searchAddress() {
      if (!this.keyword) {
        return this.$message.error('请输入搜索地址信息')
      }
      this.setLocationByAddress(this.keyword)
    },

    // 初始化地图
    initMap() {
      const that = this
      const latLon = new qq.maps.LatLng(txMapUtil.centerLat, txMapUtil.centerLng)
      const map = new qq.maps.Map(document.getElementById('mapContainer'), {
        zoom: txMapUtil.defautZommLevel,
        center: latLon,
        mapTypeId: qq.maps.MapTypeId.ROADMAP
      })
      qq.maps.event.addListener(map, 'click', function(event) {
        that.setLocationByLatLng(
          event.latLng.getLat(),
          event.latLng.getLng()
        )
      })
      // 经纬度解析类回调函数
      this.geocoder = new qq.maps.Geocoder({
        complete: function(result) {
          console.log(result.detail)
          that.nowAddress = result.detail
          that.nearPointList = result.detail.nearPois
          map.setCenter(result.detail.location)
          // 标记点
          const marker = new qq.maps.Marker({
            map: map,
            position: result.detail.location
          })
          that.markersArray.push(marker)
          if (that.markersArray.length > 1) {
            for (let i = 0; i < that.markersArray.length - 1; i++) {
              that.markersArray[i].setMap(null) // 清除标记
            }
          }
        }
      })
      // 地址解析回调函数
      that.geocoderLocation = new qq.maps.Geocoder({
        complete: function(result) {
          // 查找附近的点
          const latLng = new qq.maps.LatLng(
            result.detail.location.lat,
            result.detail.location.lng
          )
          that.geocoder.getAddress(latLng)
        }
      })
    },

    // 选择地址事件
    selectAddress(item, type) {
      if (type === 1) {
        const addressInfo = item.addressComponents
        this.$emit(
          'on-select',
          addressInfo.district + addressInfo.streetNumber,
          item.location.lat,
          item.location.lng
        )
        this.isShowDialog = false
      }
      if (type === 2) {
        this.$emit(
          'on-select',
          item.address + item.name,
          item.latLng.lat,
          item.latLng.lng
        )
        this.isShowDialog = false
      }
    },

    // 显示地图
    show() {
      this.isShowDialog = true
      setTimeout(() => {
        this.keyword = ''
        this.initMap()
      })
    },

    // 根据地址信息进行定位
    setLocationByAddress(address) {
      setTimeout(() => {
        this.geocoderLocation.getLocation(address)
      })
    },

    // 根据经纬度进行定位
    setLocationByLatLng(lat, lng) {
      setTimeout(() => {
        const latLng = new qq.maps.LatLng(lat, lng)
        this.geocoder.getAddress(latLng)
      })
    }
  }
}
</script>

<style scoped lang="scss">
.search {
  margin-bottom: 15px;
  margin-top: -20px;
}

.address {
  margin-top: 15px;
  margin-bottom: 10px;

  .el-button {
    padding: 0;
  }
}

.table {
  .el-button {
    padding: 0;
  }
}
</style>
